import java.sql.SQLOutput;

public class Final {
    public static void main(String[] args) {
        A a = new B();
        System.out.println(a.STUDENT_NAME.replace("s", "y"));
    }
}

class A{
    //public final int STUDENT_AGE = 12;
    public final String STUDENT_NAME = "lisi";
    /*public void print(){
        System.out.println("A");
    }*/
}

class B extends A{
   /* @Override
    public void print() {
        System.out.println("B");
    }*/
}

